Process MUC deletion

telegram/commands.go

@@ -980,9 +980,7 @@ func (c *Client) ProcessChatCommand(chatID int64, cmdline string) (string, bool,
 		}
 	// leave current chat (for owners)
 	case "leave!":
-		_, err := c.client.DeleteChat(&client.DeleteChatRequest{
-			ChatId: chatID,
-		})
+		err := c.DeleteChat(chatID)
 		if err != nil {
 			return err.Error(), true, false
 		}

telegram/utils.go

@@ -588,6 +588,39 @@ func (c *Client) LeaveMUC(chatId int64, resource string) {
 	}
 }
 
+// DestroyMUC removes everyone from the MUC
+func (c *Client) DestroyMUC(chatId int64) error {
+	err := c.DeleteChat(chatId)
+	if err != nil {
+		return err
+	}
+
+	c.locks.mucCacheLock.Lock()
+	defer c.locks.mucCacheLock.Unlock()
+
+	mucState, ok := c.mucCache[chatId]
+	if !ok || mucState == nil {
+		return nil
+	}
+
+	var toResources []string
+	for resource := range mucState.Resources {
+		toResources = append(toResources, resource)
+	}
+	c.sendPresence(
+		gateway.SPFrom(gateway.MUCNODE(chatId)),
+		gateway.SPResource(c.GetMUCNickname(0)),
+		gateway.SPToResources(toResources),
+		gateway.SPMUCAffiliation("none"),
+		gateway.SPMUCRole("none"),
+		gateway.SPMUCDestroy(""),
+	)
+
+	delete(c.mucCache, chatId)
+
+	return nil
+}
+
 func (c *Client) getFullName(user *client.User) string {
 	fullName := user.FirstName
 	if user.LastName != "" {
@@ -2710,6 +2743,14 @@ func (c *Client) SetChatPermissions(chatID int64, permissions *client.ChatPermis
 	return err
 }
 
+// DeleteChat is a handy wrapper for the following TDLib method
+func (c *Client) DeleteChat(chatID int64) error {
+	_, err := c.client.DeleteChat(&client.DeleteChatRequest{
+		ChatId: chatID,
+	})
+	return err
+}
+
 // CloneChatPermissions makes a copy of ChatPermissions structure
 func CloneChatPermissions(permissions *client.ChatPermissions) *client.ChatPermissions {
 	return &client.ChatPermissions{

xmpp/extensions/extensions.go

@@ -244,6 +244,7 @@ type MessageXMucUserInviteContinue struct {
 type PresenceXMucUserExtension struct {
 	XMLName  xml.Name               `xml:"http://jabber.org/protocol/muc#user x"`
 	Item     PresenceXMucUserItem
+	Destroy  *MucDestroy
 	Statuses []PresenceXMucUserStatus
 }
 
@@ -327,10 +328,18 @@ type QueryMucAdminItem struct {
 // QueryMucOwner is from XEP-0045
 type QueryMucOwner struct {
 	XMLName   xml.Name          `xml:"http://jabber.org/protocol/muc#owner query"`
-	Form      *stanza.Form      `xml:"jabber:x:data x`
+	Form      *stanza.Form      `xml:"jabber:x:data x,omitempty"`
+	Destroy   *MucDestroy       `xml:"destroy,omitempty"`
 	ResultSet *stanza.ResultSet `xml:"set,omitempty"`
 }
 
+// MucDestroy is a child element from XEP-0045
+type MucDestroy struct {
+	XMLName  xml.Name `xml:"destroy"`
+	Jid      string   `xml:"jid,attr,omitempty"`
+	Reason   string   `xml:"reason,omitempty"`
+}
+
 // Namespace is a namespace!
 func (c PresenceNickExtension) Namespace() string {
 	return c.XMLName.Space

xmpp/gateway/gateway.go

@@ -450,6 +450,12 @@ var SPMUCJid = args.NewString()
 // SPMUCStatusCodes is a set of XEP-0045 MUC status codes
 var SPMUCStatusCodes = args.New()
 
+// SPMUCDestroy is a XEP-0045 room destruction element
+var SPMUCDestroy = args.NewString()
+
+// SPToResources achieves to send the presence to certain resources only
+var SPToResources = args.New()
+
 func newPresence(bareJid string, to string, args ...args.V) stanza.Presence {
 	var presenceFrom string
 	if SPFrom.IsSet(args) {
@@ -534,6 +540,12 @@ func newPresence(bareJid string, to string, args ...args.V) stanza.Presence {
 					})
 				}
 			}
+			if SPMUCDestroy.IsSet(args) {
+				userExt.Destroy = &extensions.MucDestroy{
+					Jid:    SPMUCDestroy.Get(args),
+					Reason: "Group was deleted",
+				}
+			}
 			presence.Extensions = append(presence.Extensions, userExt)
 		}
 	}
@@ -557,6 +569,15 @@ func SendPresence(component *xmpp.Component, to string, args ...args.V) error {
 		"to":   to,
 	}).Info("Got presence")
 
+	var tos []string
+	if SPToResources.IsSet(args) {
+		for _, toResource := range SPToResources.Get(args).([]string) {
+			tos = append(tos, to + "/" + toResource)
+		}
+	} else {
+		tos = []string{to}
+	}
+	for _, to := range tos {
 		presence := newPresence(bareJid, to, args...)
 
 		// explicit check, as marshalling is expensive
@@ -581,6 +602,7 @@ func SendPresence(component *xmpp.Component, to string, args ...args.V) error {
 			Queue[presence.From+presence.To] = &presence
 			QueueLock.Unlock()
 		}
+	}
 
 	return nil
 }

xmpp/handlers.go

@@ -1899,11 +1899,7 @@ func handleSetQueryMucOwner(s xmpp.Sender, iq *stanza.IQ, query *extensions.Quer
 		return
 	}
 
-	if query.Form == nil {
-		iqAnswerSetError(answer, 400)
-		return
-	}
-
+	if query.Form != nil {
 		switch query.Form.Type {
 		case stanza.FormTypeSubmit:
 			// okay, noop
@@ -1963,6 +1959,13 @@ func handleSetQueryMucOwner(s xmpp.Sender, iq *stanza.IQ, query *extensions.Quer
 				}
 			}
 		}
+	} else if query.Destroy != nil {
+		err = session.DestroyMUC(toID)
+	} else {
+		// per 1.0 spec version, it also could be a destruction, but too dangerous to cover probably
+		iqAnswerSetError(answer, 400)
+		return
+	}
 
 	if err != nil {
 		code, ok := telegram.GetErrorCode(err)
@@ -1973,6 +1976,7 @@ func handleSetQueryMucOwner(s xmpp.Sender, iq *stanza.IQ, query *extensions.Quer
 		answer.Error.Text = err.Error()
 		return
 	}
+
 }
 
 func iqAnswerSetError(answer *stanza.IQ, code int) {